Seaforth, New South Wales

Middle Harbour Creek, a tributary of Middle Harbour, is a youthful tide-dominated, drowned-valley estuary north–west of Sydney Harbour, in Sydney, New South Wales, Australia.

The Spit Bridge, a steel and concrete girder bridge with a bascule lift span across the Middle Harbour, is located 10 kilometres (6.2 mi) north-east of the central business district in Sydney, Australia. The bridge carries The Spit Road (A8) from a point called The Spit, and connects the suburbs of Mosman, on the south bank and Seaforth, on the north bank.

North Balgowlah is a suburb of Northern Sydney, in the state of New South Wales, Australia. North Balgowlah is located 13 kilometres north-east of the Sydney central business district, in the local government area of Northern Beaches Council, and part of the Northern Beaches region. North Balgowlah shares the postcode 2093 with the adjacent Balgowlah and Balgowlah Heights. There is access to Manly Dam Memorial Park from many streets in North Balgowlah for bushwalking, kayaking, swimming, and water-skiing. Manly Dam also has a children's playground which is currently being re-developed, and multiple picnic areas North Balgowlah is home to a primary school, Community Centre, park and local shops.

The Division of Warringah is an Australian electoral division in the state of New South Wales.

Buhrich House II is a heritage-listed residence located at 375 Edinburgh Road, Castlecrag, City of Willoughby, New South Wales, Australia. It was designed by Hugh Buhrich and built during 1972. The property is privately by members of the Buhrich family. It was added to the New South Wales State Heritage Register on 25 May 2001.

The Balgowlah Boys Campus of Northern Beaches Secondary College is a government-funded single-sex comprehensive secondary day school for boys only, located in Balgowlah, a suburb on the Northern Beaches of Sydney, New South Wales, Australia. Established in 1954 as Balgowlah Boys High School, the campus enrolled approximately 900 students in 2018, from Year 7 to Year 12, of whom one percent identified as Indigenous Australians and 28 percent were from a language background other than English. The school is operated by the NSW Department of Education in accordance with a curriculum developed by the New South Wales Education Standards Authority; the principal is Paul Sheather.

Middle Harbour (or Warrin ga), a semi–mature tide dominated drowned valley estuary, is the northern arm of Port Jackson, an inlet of the Tasman Sea located north of Sydney central business district on the coast of New South Wales, Australia. Middle Harbour has its source in the upper reaches of Garigal National Park where it forms Middle Harbour Creek and flows southeast to become Middle Harbour at Bungaroo and travels for approximately 10 kilometres (6.2 mi) before reaching its mouth at Port Jackson between Grotto Point near Clontarf and Middle Head. The catchment area of Middle Harbour is approximately 100 square kilometres (39 sq mi).

Balgowlah is a suburb of northern Sydney, in the state of New South Wales, Australia. Balgowlah (or Bulgowlah) said to be an Aboriginal name for "North Harbour". The area now known as Balgowlah was known to the Aboriginals as Jilling. Balgowlah is located 12 kilometres north-east of the Sydney central business district in the local government area of Northern Beaches Council, in the Northern Beaches region. Balgowlah shares the postcode 2093 with the adjacent suburbs of Manly Vale, Balgowlah Heights and North Balgowlah.

The Manly Dam Reserve, also known as the Manly Warringah War Memorial Park, is an urban bushland reserve located in the Northern Beaches region of Sydney, Australia. The reserve adjoins the south-eastern edge of Garigal National Park. Located within the 376 hectares (930 acres) reserve is the 30-hectare (74-acre) dam reservoir.The heritage listed dam wall was designed and built in 1892 by the NSW Department of Public Works. The dam wall is located just outside the boundary of the reserve and is owned by Sydney Water. There are a number of Aboriginal heritage sites in the reserve.

The Manly Dam is a heritage-listed dam near King Street, Manly Vale with a reservoir extending into Allambie Heights, both in the Northern Beaches Council local government area of New South Wales, Australia. It is often used as a place to have recreational activities. The reservoir is located within the Manly Dam Reserve. The dam was designed by the NSW Department of Public Works and built in 1892 by the Department. The reservoir and dam is owned by Sydney Water, an agency of the Government of New South Wales. The reservoir and dam was added to the New South Wales State Heritage Register on 18 November 1999.

The Middle Harbour Syphon is a heritage-listed sewerage syphon located at Monash Crescent (East Side), Clontarf, Northern Beaches Council, New South Wales, Australia. It was designed by E. M. de Burgh, an engineer in the NSW Public Works Department and was built from 1922 to 1925 by the Department. The sewerage syphon is also known as the Middle Harbour Syphon NSOOS and The Spit Syphon. The property is owned by Sydney Water, an agency of the Government of New South Wales. The property was added to the New South Wales State Heritage Register on 15 November 2002.

Innisfallen Castle and grounds is a heritage-listed mansion located at 14 Cherry Place, Castle Cove, City of Willoughby, New South Wales, Australia. The castle is situated on a point overlooking Sugarloaf Bay in the Middle Harbour of Sydney.The property is privately owned. It was added to the New South Wales State Heritage Register on 2 April 1999.